18940908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{509}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 50722560

約数和(自身を除く): 31781652

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 443, 509, 886, 1018, 1329, 1527, 1772, 2036, 2658, 3054, 3101, 3563, 5316, 6108, 6202, 7126, 9303, 10689, 12404, 14252, 18606, 21378, 37212, 42756, 225487, 450974, 676461, 901948, 1352922, 1578409, 2705844, 3156818, 4735227, 6313636, 9470454, 18940908]

約数ペア:

[(1, 18940908), (2, 9470454), (3, 6313636), (4, 4735227), (6, 3156818), (7, 2705844), (12, 1578409), (14, 1352922), (21, 901948), (28, 676461), (42, 450974), (84, 225487), (443, 42756), (509, 37212), (886, 21378), (1018, 18606), (1329, 14252), (1527, 12404), (1772, 10689), (2036, 9303), (2658, 7126), (3054, 6202), (3101, 6108), (3563, 5316)]